When Miaka Yuuki's best friend Yui Hongo asks her to tag along while she returns a library book before cram school ( Cram school is very hard classes students take to do better on their test for high school), Miaka doesn't think twice about going. If only she knew what (mis)adventures awaited her and her best friend...
While at the library, the two 15-year olds stumble across an ancient Chinese manuscript, cryptically titled, "The Universe of the Four Gods." Out of curiosity Yui begins to read it out loud for them both.
"This is the story of a girl who gathered the seven Seishi of Suzaku and gained omnipotent powers. The book itself is an incantation. Whoever finishes reading it will also receive these powers. When the page is turned, the story will become the truth and begin."
Suddenly, the girls are engulfed by a red light and transported into the book. When they come to they find themselves in some desolate spot in the middle of nowhere.
